John beal



N6. 626,659. Patented June 6, I899. J. BEAL &. F. 6. BROWN LUNG TESTEB.

7 (Application filed Aug. 23, 1898.)

(No Model.)

w mm? M Y 5 3 m .nb 0 W 0 w mw 'and to the figures of reference markedthere- UNITED STATES PATENT OFFICE.

JOHN BEAL, OF BERTI-IOUD, AND FRANK O. BROWN, OF LOVELAND, COLORADO;SAID BROWN ASSIGNOR TO SAID BEAL.

LUNG-TESTER.

SPECIFICATION forming part of Letters Patent No. 626,659, dated June6,1899.

Application filed August 23, 1898.

To ctZZ whom, it may concern.-

Be it known that we, JOHN BEAL, residing at Berthoud, and FRANK 0.BROWN, residing at Loveland, in the county of Larimer and State ofColorado, citizens of the United States of America, have inventedcertain new and useful Improvements in Lung-Testers; and we do declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings,

on, which form a part of this specification.

Our invention relates to improvements in lung-testers, our object beingto provide a device of this class which shall be simple in constructioneconomical in cost, reliable,durable, and efficient in use; and to theseends the invention consists of the features hereinafter described andclaimed, all of which will be fully understood by reference to theaccompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure l is a front eleva-- tion of the device. Fig. 2is a rear view of the same with the back plate of the casing removed.Fig. 3 is a section taken on the line 3 3, Fig. 1. Fig. 4 is a sectiontaken on the line 4 4, Fig. 3.

Similar reference characters indicating corresponding parts in theviews, let the numeral 5 designate a case mounted on legs 6, which arescrewed into a solid segmental plate 7, located within the case. Thelegs pass through openings formed in the case and enter coincidingthreaded apertures formed in the plate 7, thus fastening the latter inplace. In the bottom of the case 5 is formed an opening, which registerswith a threaded opening formed through the segmental plate, into whichis screwed the elbow-shaped tube 8. Made fast to the upper surface ofthe plate 7, which is formed fiat for the purpose, is a tube orpiston-chamber 9, which is provided at the bottom with an opening 9,communicating with the tube 8. This opening is surrounded by a rubberwasher 10, which forms the bottom of the tube. In this tube is located ahollow piston 12, provided with a closed bottom Serial No- 689,354. (Nomodel.)

12* and a diaphragm 12, located above the 7 bottom and provided with anopening 12. Above this diaphragm is a chamber 12 of suitable capacity.The top of the hollow piston is closed by a plug 13.

To the main tube 9 isattached a short horizontal open-ended conduit 14,which communicates with the interior of the main tube by Way of anopening 15, formed therein directly opposite another opening 16, whichforms the outlet of a byway 17, whose inlet is an opening 18, formed inthe tube 9. The hollow piston 12 is provided with two openings 19 and20, located on opposite sides and adapted to register with the openings15 and 16 of the tube 9 when the piston is raised to the position shownin Fig. 3, the air in that event taking the course indicated by thearrows. In the chamber 12 of the piston any suitable powdered substancemay be placed, which will be drawn through the opening in the diaphragm12 and ejected through the tube 14.

Mounted on the conduit 14., which forms an arbor therefor, is a pinion21, whose hub 21 projects beyond the dial or graduated face 5 of thecase 5. To this pinion-hub is attached a hand or pointer 22, which movesaround the graduated face of the case as the pinion turns on its hollowarbor. To the piston 12 is attached a toothed or cogged arm 23, forminga rack which engages and actuates the pinion 21 as the piston moves backand forthin its tube 9, the latter being vertically slotted to permitthe movement of the toothed arm or rack-ban To the hub of the pinion isattached one extremity of a coil-spring 24:,wh0se opposite extremityterminates in ahook adapted to catch in open slots formed in'atensionflange 25, attached to the inner surface of the front plate. Thetension of the spring is regulated by changing the hooked extremity ofthe spring from one slot to another of the tension-flange. Thecoil-spring is so arranged that as the piston moves upward in the tube 9the spring is wound or placed under tension. Hence the normal positionof the piston is in the bottom of the tube or chamber 9.

' In using the device the person whose lungs are to be tested places theelbow-shaped tube to his mouth and blows thereinto. The air 2 p i I626,659

passing through'the tube engages the bottom of closed head of the hollowpiston andraises the same in its chamber until its openings 19 and 20register with the openings 15 and 16 of the piston-chamber. Inihis eventthe air passes through the opening 18, the by-passage 17, the openings16 19 20 15, and the conduit 14 to the outer air. Hence as the airescapes from the conduit 14: the piston has been raised to its limit ofmovement. It is evident that the tension of the spring may be soregulated as to make the feat of raising the piston, so as to let theair escape, more or less difficult, as may be desired.

The object of the chamber 12 in the piston is to make the instrument atthe same timeboth a lung-tester and an amusement apparatus. ber 12contains some powdered material, as soon as the air passes through thelower part of the piston between its bottom and the diaphragm, as abovedescribed, this powdered substance will be forcibly ejected through theconduit 14C to the surprise of the person blowing on the instrument inthe event that he is not aware the device contains a powdered material.If the elbow-shaped tube is located as shown in the drawings, theconduit It will point, directly at the face of the person using theinstrument. Hence the powdered mate: rial will be ejected into the faceof the user. This, however, may be avoided by giving the elbow-shapedtube a right-angular turnf It is intended, however, that the personusing the instrument shall be. in position to watch the movement of thehand or pointer. Hence the position of the elbow-shaped tube shown inthe drawings is the preferred one.

The back 5F of the case is detachable to expose the operating partslocated therein. A

rubber tube of any desired length may be attached to the elbow-shapedtube. f Having thus described our invention, what we claim is,- 1. Thecombination of a case having a chamber located therein, an exterior pipecommunicating with said chamber, a hollowrpi'ston located in the chamberand having a closed top and bottom, the piston being provided withopenings on opposite sides and adapted to register with openings formedin the pistonchamberwhen the piston is properly actuated, a hollow arborleading from one opening in the piston-chamber to the external air, aspringheld pinion mounted on said arbor and having a hub provided withan external hand or index adapted to move around the graduated faceformed on the case, and a rack-bar attached to the piston and engagingthe pinion,

thepiston-chamber being provided with a bypassage communicating with theregistering openings in the piston and piston-chamber.Forinstance,assumingthat thecham- 5 2. The combination of a case havinga chamber located therein, an exterior pipe or conjduit communicatingwith the said chamber, I a hollow piston located in the chamber andhaving a closed bottom, an apertured dia-' phragm above the bottom, anda plug closing j the chamber abovethe diaphragm, the piston beingprovided with openings on opposite sides and adapted to. register withopenings formed in thepiston-chamber when the piston is properlyactuated, a hollow arbor leading from one opening in the piston-chamberto the external air, a spring-held pinion mounted on said arbor andhaving a hub provided with ,an external hand or index adapted to movearound a graduated face or dial form ed on the Qcase, a rack-barattached to the piston and engaging the pinion, the piston-chamber beingprovided with a by-passage communicatj in g with the registeringopenings in the piston and piston-chamber.

In testimony whereof we affix our signatu res in presence of twowitnesses.

JOHN BEAL. FRANK 0. BROWN. \Vitnesses:

SARAH BEAL, B. O. MILLs.

